Method of forming scoop structures to accommodate sliders operating on one face of the scoop structures



March 1, 1966 MQRIN 3,238,285

METHOD OF FORMING scooP STRUCTURES T0 ACCOMMODA'IE SLIDERS OPERATING ON ONE FACE OF THE SCOOP STRUCTURES Filed Feb. 19, 1963 2 Sheets-Sheet 1 INVENTOR. 100/5 /7. Mom/v March 1, 1966 H. MORIN 3,238,235

METHOD OF FORMING SCOOP STRUCTURES TO ACCOMMQDATE SLIDERS OPERATING ON ONE FACE OF THE SCOOP STRUCTURES Filed Feb. 19, 1963 2 Sheets-Sheet 2 f l g- 5 BY 44 Wa ,4 r TOR/VfY United States Patent METHOD OF FORMING SCOOP STRUCTURES T0 ACCOMMODATE SLIDERS OPERATING ON ONE FACE 0F THE SCOOP STRUCTURES Louis I-I. Morin, Bronx, N.Y.

(125 Beechwood Ave, New Rochelle, N.Y.) Filed Feb. 19, 1963, Ser. No. 259,584 4 Claims. (Cl. 264-252) This invention relates to scoops of separable fastener stringers formed on the stringers in a manner to provide offset slider engaging shelves on the heel or mounting end portions of the scoops to accommodate sliders which operate basically on one face only of the scoops in coupling and uncoupling the stringers, the sliders having inturned or hook-shaped side flanges engaging the offset shelves in coupling and uncoupling the scoops of the stringers. More particularly, the invention deals with a method of forming mounting end portions of various types of scoops to provide thereon the offset slider engaging shelves in the operation of casting the scoops directly upon the beaded edges of the stringer tapes.

Still more particularly, the invention deals with the provision of novel slider structures for operation in conjunction with scoops of the type and kind defined.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

FIG. 1 is an enlarged diagrammatic perspective view illustrating the method of forming one type of scoop on the beaded edge of a stringer so as to provide on the heel or mounting end portions of the scoops projecting slider engaging shelves.

FIG. 2 is a view, generally similar to FIG. 1, illustrating the method as applied to formation of another type of scoop.

FIG. 3 is an enlarged diagrammatic plan view of a slider illustrating engagement of a pair of stringers of the type and kind shown in FIG. 1, with the part of the construction broken away and with parts of the construction broken away and in section.

FIG. 4 is a diagrammatic sectional view on the broken line 44 of FIG. 3.

FIG. 5 is a diagrammatic sectional view on the line 55 of FIG. 3.

FIG. 6 is a view, generally similar to FIG. 3, but illustrating stringers with scoops similar to that shown in FIG. 2, with parts of the construction broken away and in section.

FIG. 7 is a view, generally similar to FIG. 6, showing the other surface of the stringers and the slider and showing only part of the construction.

FIG. 8 is a diagrammatic section on the broken line 8-8 of FIG. 6; and

FIG. 9 is a similar section on the line 9--9 of FIG. 8.

In illustrating certain adaptations of my invention, 1 have shown diagrammatically in FIGS. 1, 3, 4 and 5 of the drawing scoops of the center ledge type, as generally disclosed in my prior Patent Number 2,942,317; whereas, in FIGS. 2 and 6 to 9, inclusive, I have diagrammatically shown scoops of the type and kind arranged solely upon one surface of a stringer tape and more generally illustrated in my prior application Serial Number 104,736,

filed April 21, 1961, now Patent No. 3,114,952.

Patented Mar. 1, 1966 tion and in positioning the next successive portion of the stringer tape at a casting station to receive the next formed scoop, or groups of scoops, reference can be made to Patent Number 1,975,966, granted October 9, 1934.

It will be understood, in this connection, that the present method is modified to the extent that a different type and 'kind of core is utilized in formation of the shelves on the heel or mounting end portion of the scoops.

Considering FIGS. 1 to 5, inclusive, it will appear that each stringer 10 of the separable fastener has a beaded edge 11, upon which scoops 12 are cast. The scoops in the present illustration are of what I term the center ledge type and include mounting end portions 13, sometimes referred to as heels, formed on the tape and engaging both side surfaces of the tape, as will clearly appear from a consideration of FIGS. 4 and 5. At 14 is shown the coupling end portion of each of the scoops which are disposed primarily on one side of the scoop, as will be clear from a consideration of FIGS. 4 and 5.

Considering FIG. 1 of the drawing, in illustrating one adaptation of the method of producing the stringer tapes, a rectangular core 15 is employed and disposed upon one surface of the tape 10 inwardly of the bead 11 at the casting station 16 defined :by the three scoops 12, which are formed upon the core 15 as said core is positioned at the casting station 16. 17 represents diagrammatically the sprue with branches 17 directed to the three scoop cavities for formation of the group of three scoops on the tape 10, as well as on the core 15. After the group of scoops have been formed, the core 15 is moved downwardly to position the three group of scoops, as well as the tape upon which they are secured at a stripping and trimming station 18, after which, the core 15 is stripped from the group of scoops at the station 18 and suitable trimming tools, not shown, strip and remove the gate in the manner diagrammatically illustrated. In the above operation, it will be apparent that the next section of the tape has been positioned in the dies when 15 is returned to the position shown in FIG. 1; whereupon, the next successive casting operation takes place and another group of three scoops are formed and the above operations are repeated in producing stringer lengths of the scoops, in manners known in the art.

By location of the core 15, as diagrammatically seen in FIG. 1, it will be apparent that recesses 19 will be formed in portions of the mounting ends or heels 13 of the scoops adjacent the surface of the tape 10, thus leaving projecting shelves 20 on the heels 13 and spaced with respect to the surface of the tape 10.

Considering FIGS 3, 4 and 5 of the drawing, with stringers made according to the teachings in FIG. 1 of the drawing, special type of sliders 21 will be employed to couple and uncouple the stringers. These sliders have one wall 22, having a contracted end 23 and a wide or flared end 24, note FIG. 3 of the drawing. The wall 22 has centrally of the wide end portion thereof a frog or web 25, partially shown in section in FIG. 3 of the drawing, the web 25 including laterally extending flanges 26, clearly seen in FIG. 4 of the drawing, which extend into the slider body beyond the inner contracted end of the web 25, as will clearly appear from a consideration of FIG. 3 of the drawing. The flanges 26, in conjunction with the wall 22, form scoop guiding recesses 27 at opposed sides of the web 25 for reception of the coupling end portions 14 of the scoops 12, as clearly noted in FIG. 4 of the drawing. It will be noted that the surface 25 of the web is in alinement with exposed surfaces of the scoops 12, as clearly noted in FIG. 4 of the drawing.

Each side of the wall 22 has inturned or hook-shaped flanges 28 which are adapted to extend into the recesses 19 and engage the shelves 20' in guidance of the slider 21 along the scoops of the stringers in coupling and uncoupling the same. The outer or exposed surface of the wall 22 includes suitable channelled means, as at 29, for coupling a pull with the slider for operation of the slider along the stringers. The means 2 9 can be of any type and construction, as well known in the art and part only of this means is illustrated in FIG. 3 of the drawing.

Considering FIGS. 2 and 6 to 9, inclusive, here is illustrated another adaptation of my invention as applied to scoops, such as 30 attached to one surface 31 only of a stringer tape 32. This surface of a stringer tape 32 also includes a bead 33. It will also appear that the tape 32 extends beyond the head 33, as indicated at 3-4 and edges of these extensions 34 are adapted to be brought into abutting engagement with each other, as indicated at 35 in FIGS. 6, 7 and 9 of the drawing.

Referring to FIG. 2, the scoops 30 are formed in the same manner as the scoops 12 in FIG. 1 and upon a core similar to the core 15, the gates of the scoops 30 being illustrated at 36 and are otherwise the same as the gate 17. The core 15' forms on the mounting end portion or heels 37 of the scoops 30 recesses 38, similar to the recesses 19, and shelves 39, similar to the shelves In FIGS. 6 to 9, inclusive, a slider 40 is shown for use in coupling and uncoupling stringer tapes having scoops thereon, the slider consisting of a wall 4-1, having a contracted end 42 and a flared end 43, the latter including a frog or web 44 having flange portions 45, generally similar to 26 in FIG. 4, forming recesses 46 at sides of the web 44 for reception of coupling end portions 47 of the scoops extending beyond the extensions 34 of each of the tapes 32.

The sides of the slider include inturned or hookshaped flanges 48 which extend into the recesses 38, as clearly noted in FIGS. 8 and 9 of the drawing, and engage the shelves 39 in movement of the slider 40' along the scoops of the stringers to couple and uncouple said scoops.

Considering FIGS. 7 and 8 of the drawing, it will appear that the web 44 includes projecting channelled means 49 for coupling a pull therewith for movement of the slider along the stringers, as with other devices of this type and kind.

It will be apparent, from a consideration of FIG. 7 of the drawing, that, with a structure as shown in FIGS. 6 to 9, inclusive, the scoops of the stringers will be fully concealed at the outer exposed surface of the stringer tapes by virtue of abutment, as at 35, and that the pull, not shown which operates the slider, is operable over such exposed surface.

It will be apparent from the foregoing that scoops of the two distinct types and kinds referred to, that is to say, scoops arranged on both surfaces of a stringer tape as in FIG. 1 or scoops arranged upon one surface only of a stringer tape, as in FIG. 2, can be of any desired structure from the standpoint of establishing coupling engagement with each other but, in both instances, the

mounting end portion or heels of the scoops are fashionedin accordance with my novel method to form slider engaging shelves spaced with respect to the surface of the stringer tape to be engaged by hook-shaped flanges on sliders employed to couple and uncouple pairs of stringers having this novel formation thereon. It will be apparent from the foregoing that the sliders are mounted primarily on one surface portion of the scoops and retained against displacement therefrom. From a standpoint of description, the engagement of the scoops in both forms of construction with the hook-shaped flanges of the sliders may be said to keep the sliders on track and, further, to maintain alinement of the scoops in their final coupling engagement at the narrow end portion of the slider 'body. It will also be interesting to note that, in sections taken through the sliders as in FIGS. 4 and 8 of the drawing, the sliders may be said to have a modified T-cross-sectional contour. In other words, in both instances, the walls 22, 41 include the depending web 25, 44, the web having the laterally extending flanges, as at 26 and 45, respectively. It will also be noted, from a consideration of FIG. 4 of the drawing that the coupling end portions of the scoops are disposed primanily on the sides of the scoops, including the projecting shelves engaged by the hook-shaped members of the slider, thus concentrating the force establishing coupling of the scoops in direct alinement with said coupling end portions.

Having fully described by invention, what I claim as new and desire to secure by Letters Patent is:

1.'T he method of forming scoops of the character defined which comprises casting a scoop at a casting station on a beaded edge portion of a stringer tape and upon a core arranged upon a surface of said tape at said station, shaping the mounting edge portion of a scoop on said surface of the tape and said core to form upon completion of the casting a recess in the inner edge of the mounting edge portion of the scoop and a projecting shelf at said ed-ge overlying said core, utilizing said core to feed the cast scoop and stringer from the casting station to a core stripping and scoop trimming station, and returning the core to the casting station for reception of the next successive cast scoop.

2. A method as defined in claim 1, wherein the scoop is formed in its entirety upon one surface of the stringer.

3. A method as defined in claim 1, wherein the scoop is formed to include mounting end portions on both surfaces of the stringer tape, and forming on the scoop a coupling end portion in alinement with the mounting end portion having the recess and shelf.

4. A method as defined in claim 1, wherein the stringer tape includes a bead inwardly of an edge portion of the tape, and forming on the scoop a coupling end portion partially overlying said edge portion of the stringer tape.

References Cited by the Examiner UNITED STATES PATENTS 1,891,989 12/1932 Johnson l859 2,392,684 1/1946 Morin 264-252 2,731,671 1/1956 Zimmerman 1859 3,055,070 9/1962 Morin 24205.l3 3,068,541 12/1962 Morin 24205.l3 3,087,200 4/1963 Morin 264-252 ROBERT F. WHITE, Primary Examiner.

DONALD J. STOCKING, Examiner. 

1. THE METHOD OF FORMING SCOOPS OF THE CHARACTER DEFINED WHICH COMPRISES CASTING A SCOOP AT A CASTNG STATION ON A BEADED EDGE PORTION OF A STRINGER TAPE AND UPON A CORE ARRANGED UPON A SURFACE OF SAID TAPE AT SAID STATION, SHAPING THE MOUNTING EDGE PORTION OF A SCOOP ON SAID SURFACE OF THE TAPE AND SAID CORE TO FORM UPON COMPLETION OF THE CASTING A RECESS IN THE INNER EDGE OF THE MOUNTING EDGE PORTION OF THE SCOOP AND A PROJECTING SHELF AT SAID EDGE OVERLYING SAID CORE, UTILIZING SAID CORE TO FEED THE CAST SCOOP ANDF STRINGER FROM THE CASTING STATION TO A CORE STRIPPING AND SCOOP TRIMMING STATION, AND RETURNING THE CORE TO THE CASTING STATION FOR RECEPTION OF THE NEXT SUCCESSIVE CAST SCOOP. 